Fountain pen



" .thereof are illustrated Patented Nov. 17, 1925.

UNITED STATES PATENT OFFICE.

ANDREAS BIENEN STEIN,

OF TOLEDO, OHIO,` ASSIGNOR TO THE CONKLIN PEN MANU- FOUNTAIN PEN.

Application filed February 25, 1924. Serial No. 694,824.

To all Iwhom it may concern.'

Be it known that I, ANDREAS BIENEN s'rmN, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a new and useful Fountain Pen, which invention is .fully set forth in the following specification.

`This invention relates to self-filling fountain-pens, and has for its object the provision of certain improvements in the ink bag compressing means thereof whereby to enhance the practicability and commercial value of pens vof this character.

A further object of the invention `is the provision of simple and efficient means for securing ink bag compressing means of the lever operated type in the barrels of foun tain pens when such barrels are of metal or thin `wall construction.

The invention is fully described in the following specification, and while in its broader aspect it is capable of embodiment in numerous forms, preferred embodiments in the accompanying drawings, in which,

Figure l is a side elevation of a fountain pen barrel with the pen point carrying section removed. Fig. 2 is an enlarged central longitudinal section thereof with the bag compressing means in inoperative posi` tion. Fig. 3 is a similar view thereof with the bag compressing means moved to compressing position. Fig. 4 is a perspective view of the lever member of the compressing means. Fig. 5 is a cross-section on the line 5-5 in Fig. 2. Fig. 6 is a fragmentary central longitudinal section of al metallic fountain pen barrel with the bag compressing means mounted therein. Fig. 7 is a crosssection on the line 7*-7 in Fig. 6. Fig. 8 is a perspective view of the lever anchoring sleeve used in connection with a metallic fountain pen barrel, and Fig. 9 is a perspective view of the segmental fulcrum pin to which the lever is fulcrumed.

Referring to the drawings, l designates a fountain pen barrel of the hard rubber or thick wall type, 2 an elastic inlr bag or reservoir mounted therein, and 3 the bag compressing bar which is substantially coextensive in length with the compressible portion of the bag and is disposed between it and a side wall'of the barrel. `The bar 3 is preferably of shallow channel form,

and is provided intermediate its ends with a longitudinally extending tongue 4 that is struck-up from the cross-web of the bar, so that its lower edge is disposed slightly above the upper side of the web in parallel relation thereto. The top edge of the tongue lldoes not, however, usually project above the leg portions of the bar.

rllhe operating lever 5 for the bar 3 is fulcrumed to a pin G within a longitudinally extending slot 7 in a side of the barrel, and is adaptedto be swung into'reclining relation to the barrel, as shown in Fig. 2, and into angular relation to the barrel, as shown in Fig. 3. The lever 5 is preferably stamped from sheet metal channel form in lcross-section for the purpose of giving it strength, and when in the closed portion, shown in Fig. 2, the outer side of its op# erating arm is adapted to lie substantially flush with the outer side of the barrel while its short arm, which is intended to engage the `compressing bar 3, is laterally offset from the operating arm transversely of the fu'lcrum pin 6 so that it will lie against the inner side 4of the of the slot 7 when the lever isin closed position. The bar engaging end of the lever 5 is provided with an eye or Opeliing 8, which is adapted to receive the tongue 4 of the compressing bar 3, and at the outer end of such eye the lever is formed with a pin or cross-portion 9 which engages un'- der the tongue 4, thereby serving to re tract the bar withthe lever when the latter is inoperative closed position. The tongue 4. is of sufficient length to'remain in engagement with the lever eye during full operating movements of the lever without imparting any longitudinal movement to the compressor bar. The side flanges of the lever 5 straddle the tongue 4 and bear against the cross-web of the bar 3.

The outer end of the lever 5 is preferably provided with a flat extension, which when the lever is in inoperative position projects over a depression l0 provided in the barrel surface at an end of the slot 7, thereby facilitating engaging the lever end with a iinger-nail when desired to throw the same to operative bar compressing position. The side webs of the lever are provided near their outer ends with spring tongues or extensions 16, which frictionally engage the barrel beyond an endv moved from bag-compressing to its side Walls of the slot 7 to yieldingly retain the lever in closed position.

In assembling the bag compressor parts, the bar 3 is inserted into theV open end of the barrel with the bag 2 in position to register with the barrel slot 7, and the inner end of the lever is inserted through the slot 7 in position for the tongue 4; of the compressorbar to thread through its eye 8 when the bar is pushed into the barrel. This having been done, the pivot pin 6 .is inserted through openings provided therefor in the Walls of the slot 7 and in the lever 5.

lVhen a metallic barrel 1a, as shown in Figs. 6 and 7, is employed the Wall thereof isusually to thin to permit the mounting of lever fulcrum pin therein, and it is necessary, therefore, to provide some other means for mounting the lever. This is accomplished. in the present case by mounting a longitudinally split .sleeve 11 in the barrel and placing it in register` With the barrel slot 7a., With the split or longitudinal opening 12 of the sleeve in position to register opening `12, as shown.

for a portion at least of its length with the barrel slot 7, thereby permitting the lever 5a to Worldovvn through the sleeve opening 12. The sleeve opening 12, in the present instance, is extended throughout the length of the sleeve to permit compression of the sleeve to facilitate insertion into the barrel. r1`he sleeve 11 near the end of the slot 7 a, in Which the `lever is fulcrumed, is provided with a cross-slot 13, which extends a distance around the sleeve at each side of the l A short section of Wire, for instance piano Wire, is made in the form of a segment 14, conforming to the slot 13 so that the ends of the slot 13 and the central portions thereof cross the opening 12 and extend through the fulcrum openings of the lever, 5, thereby forming a fulcrum support forthe lever. 1t is evident that the A'seginent 14 forms a firm support for the lever, inasmuch as itis disposed throughout its length between the side Walls of the slot 13 and has its ends preferably resting' against the end walls of said slot.

1n assembling the parts of the form shown in Figs. .6 to 9, the sleeve 11 is inserted in the barrel With its opening 12 in register with the opening 7 in the barrel and with the cross-slot 13 disposed in proper relation Vfor receiving the fulcrum member 11i for the lever. The sleeve is held inl position within theybarrelby depressing the 'part 15 into the enlargement -12ad inthe sleeve opening 12. rlhe fulcrum member 14 Ais then inserted through Athe opening provided therefor in the lever 51 and the inner end of the lever and fulcrum member are then inserted inwardly through the barrel slot 7 a and sleeve opening 12 vvithcthe fulcl um member turned so that its diameter is lengthwise of 'the opening .to permit its vinsertion Atherethrough. The lever and fulcrum member are then turned to bring the fulcrum member into register with the cross-slot 13 of the sleeve and to permit it to be dravvn upward into seating position in such slot, the fulcruin member then being held in such position preferably by the `co-action of its ends with the end-Walls of the slot.

With this form of the invention, the oompressor bar 3 entends through the sleeve 11 and is connected to the lever 5a and operated in the same manner as described in connection with the other form of the invention. The sleeve 11 is prevented from longitudinal movement in the barrel by depressing a portion 15 of the barrel 1a at an end of the slot 7 a into an enlargement 12a of the sleeve opening 12. VThe depression 15 also serves the purpose of the depression 10 in the construction shown in Figs. 2 and 3.

1 Wish it understood that my invention is not limited to any specific construction, ar- 'angen'ient or form of the parts as it is capable of nninerous modifications andchanges Without departing from the spirit of the claims.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent is:

1. 1n a fountain pen, a barrel having an opening in a side thereof, a sleeve mounted in the barrel and having a. longitudinally extending openin(T in register With the barrel opening, and a cross slot transverse to the barrel opening, a compressor bar operating lever mounted for swinging movements in the barrel and sleeve openings, and a fulcrum member for the lever disposed Within'the barrel bore andivithin said cross slot and held in position Within the barrel by the sleeve.

2. 1n afountain pen, a barrelhaving an opening in a side thereof, a sleeveiit'ted` into the barrel and having a longitudinally eX- tending opening in register with the barrel opening and having a transverse sloteX- tending across its longitudinal` opening and a distance at eitherside thereof, a fu crum Wire of segmental form disposed in said tarnsverse slot Within the barrel and held in predetermined relation to thefbarrel opening by the sleeve, and a compressor bar operating lever mounted in said barrel and sleeve openingsl and fulcrumed on said Wire.

3. 1n afountain pen, a barrel having an opening in a side thereof, a sleeve fitted into the barrel and having a longitudinallyextending opening in register with the barrel opening and having a transverse slot eX- tending across its longitudinal opening and a distance at either sidethereof, a fulcrum Wire. of segmental form .mounted in said transverse Yslot vand bearing at its ends against the end Walls of said slot, a bag-compresser bar extending through thegsleeve Within the barrel, and a bar mounted in said barrel and sleeve openings and fulcrumed on said fulcrum Wire.

Ll. In a fountain pen, a barrel having an opening in a side tliereof,a sleeve fitted into the barrel and having a longitudinally eX- tending opening in register with the barrel opening and having a transverse slot extending across its longitudinal opening and a distance at either side thereof, a fulcrum Wire of segmental form mounted in said transverse slot and bearing at its end against the end Walls of said slot, a bag compressor bar extending through the sleeve Within the barrel, and a bar operating lever mounted in said barrel and sleeve openings and fulcruined on said fulcrum Wire, the barrel having a depressed portion engaging Within a portionof the sleeve to anchor it against longitudinal movements in the barrel.

5. In a fountain pen, a barrel having an opening in a side thereof, a sleeve fitted into the barrel and having a longitudinally7 eX- tending opening in register with the barrel opening and having a transverse slot eX- tending across its longitudinal opening and a distance at either side thereof, a fulcrum Wire of segmental form mounted in said transverse slot and bearing at its end against the end Walls of said slot, a bag compressor bar extending through the sleeve Within the barrel, and a bar operating lever mounted in said barrel and sleeve openings and fuloperating lever crumed on said fulcrum Wire, the barrel having a depressed portion engaging Within a portion of the sleeve to anchor it against longitudinal movements in the barrel, and the lever having its outer end seating over the depressed portion of the barrel to facilitate engaging and moving the same to bar compressing position.

6. In a fountain pen, a barrel having an opening in a side thereof, a sleeve fitted into the barrel and having an opening in register with the barrel opening and a slot transverse to the barrel opening, a compressor bar operating lever mounted in the openings of said barrel and sleeve and a segmental fulcrum member for the lever disposed Within the sleeve slot crossWise of the barrel opening and bearing outward against the inner wall of the barrel.

7. In a fountain pen, a barrel having an opening in a side thereof, a longitudinally split sleeve sprung into the barrel and having an opening in register with the barrel opening, a compressor bar operating lever mounted in the opening of said barrel and sleeve, and a segmental fulorum member for the lever fitted Within the barrel and held in position across said openings by the sleeve.

In testimony whereof I have hereunto signed my name to this specification.

ANDREAS BIENENSTEIN. 

